Congress vice-president Rahul Gandhi congratulated Prime Minister Narendra Modi and his Bharatiya Janata Party (BJP) on their stunning victory in Uttar Pradesh and Uttarakhand. "I congratulate Shri. Narendra Modi and the BJP on their victory in Uttar Pradesh & Uttarakhand," the 46-year-old leader tweeted.
Moments later, Modi sent a reply from his personal handle, @narendramodi: "Thank you. Long live democracy!"
The exchange on Twitter brought the curtains down on a long and acrimonious campaign in the two states, and three others - Manipur, Punjab and Goa - as the two parties wooed their voters in the Assembly elections.
Earlier in the day, Modi had also made a congratulatory call to Captain Amarinder Singh of Punjab, where the Congress is poised to make a landslide return, beating the Akali Dal-BJP combine.
The BJP is set to sweep back to power in Uttar Pradesh after 15 long years, giving Modi his biggest victory after the 2014 Lok Sabha polls. Powered by an aggressive campaign spearheaded by Modi, BJP candidates were on the road to victory in a whopping 324 of 403 constituencies in the state.